CN104971754A - Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor - Google Patents

Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor Download PDF

Info

Publication number
CN104971754A
CN104971754A CN201510296197.2A CN201510296197A CN104971754A CN 104971754 A CN104971754 A CN 104971754A CN 201510296197 A CN201510296197 A CN 201510296197A CN 104971754 A CN104971754 A CN 104971754A
Authority
CN
China
Prior art keywords
bipo
kaolin
preparation
composite photocatalyst
catalyst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510296197.2A
Other languages
Chinese (zh)
Inventor
刘玉民
曹亚飞
吕华
光景
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Normal University
Original Assignee
Henan Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Normal University filed Critical Henan Normal University
Priority to CN201510296197.2A priority Critical patent/CN104971754A/en
Publication of CN104971754A publication Critical patent/CN104971754A/en
Pending legal-status Critical Current

Links

Landscapes

  • Catalysts (AREA)

Abstract

The invention discloses a loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and a preparation method therefor and belongs to the technical field of inorganic environment-friendly photocatalytic materials. The key point of the technical scheme of the invention is that the loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst is prepared through compositing a Bi2O2CO3-BiPO4 composite photocatalyst and carrier granular kaolin. The invention also discloses a preparation method for the loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst. According to the loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and the preparation method therefor, organics in waste water are effectively adsorbed to the surface of the Bi2O2CO3-BiPO4 composite photocatalyst by using ion exchange and adsorption properties of kaolin, so that the probability of contact between the catalyst and pollutants is increased, the aim of increasing photodegradation efficiency and degradation rate is achieved, and meanwhile, the preparation cost of the photocatalyst is greatly reduced.

Description

A kind of support type kaolin/Bi 2o 2cO 3-BiPO 4composite photo-catalyst and preparation method thereof
Technical field
The invention belongs to inorganic environment-friendly catalysis material technical field, be specifically related to a kind of support type kaolin/Bi 2o 2cO 3-BiPO 4composite photo-catalyst and preparation method thereof.
Background technology
In recent decades, environmental problem become the mankind face the most serious problem, especially poisonous, harmful environmental problem caused by persistent organic pollutants, has become the significant problem affecting human survival and development.Organic pollution permineralization can be directly nontoxic, harmless Small molecular by Photocatalitic Technique of Semiconductor, and degradation process non-secondary pollution, be a kind of green environment Treatment process with broad prospect of application.In Photocatalitic Technique of Semiconductor, the photochemical catalyst preparing high catalytic activity has become one of research direction that current vast researcher enlivens the most.
In numerous catalysis materials, bismuth series photocatalyst causes the extensive concern of researcher with the electronic structure of its uniqueness, excellent visible absorption ability and higher organic matter degradation ability.Bi 2o 2cO 3it is a kind of novel catalysis material, its energy gap is 3.4eV, when the illumination being subject to energy and being not less than its band gap is penetrated, can produce conduction band electron and valence band hole, there is stronger reproducibility and oxidisability, directly organic pollutant degradation can be become nontoxic water and carbon dioxide.But single Bi 2o 2cO 3the defects such as the high and quantum efficiency of Carrier recombination rate is lower limit its practicalization.Semiconductors coupling is the effective means improving photocatalysis efficiency, can be improved the separation of charge effect of system, expand its spectral response range by semiconductors coupling.
BiPO 4be another important catalysis material in bismuth system oxide, energy gap is 3.85eV, and the crystal structure of its uniqueness and electronic structure make it have wider absorption band gap and higher photocatalytic activity.Research shows, Bi 2o 2cO 3the conduction band potential E of photochemical catalyst cB=0.16eV, valence band electromotive force E vB=3.56eV, and BiPO 4the conduction band potential E of photochemical catalyst cB=0.43eV, valence band electromotive force E vB=4.28eV.At Bi 2o 2cO 3-BiPO 4in composite semiconductor, Bi 2o 2cO 3conduction band potential more negative, light induced electron is easily from the Bi that energy level is low 2o 2cO 3conduction band moves to the high BiPO of energy level 4on conduction band; Meanwhile, BiPO 4valence band electromotive force corrigendum, photohole is easily from the BiPO that energy level is high 4valence band moves to the low Bi of energy level 2o 2cO 3in valence band, thus improve the separative efficiency of photogenerated charge, and then improve its photocatalytic activity.
Although Bi 2o 2cO 3-BiPO 4compound light urges agent to have higher photocatalytic activity, but Bi 2o 2cO 3-BiPO 4composite photocatalyst is less due to its particle diameter, easily reunites in actual use and causes the reduction of its photocatalytic activity.So, time in actual application as wastewater treatment, must by Bi 2o 2cO 3-BiPO 4compound light is urged agent to be carried on certain carrier and could be used.Kaolin is the nonmetallic mineral of rich reserves, is take kandite as the soil property rock of main component, has strong ionic adsorption and weak cation exchange, strong absorptive, is easy to dispersion suspension in the medium feature of water, be applicable to very much being used as Bi 2o 2cO 3-BiPO 4the carrier of composite photocatalyst, but at present about support type kaolin/Bi 2o 2cO 3-BiPO 4composite photo-catalyst there is not yet relevant report.
Summary of the invention
The technical problem that the present invention solves there is provided the high and support type kaolin/Bi of easily separated recovery of a kind of photocatalytic activity 2o 2cO 3-BiPO 4composite photo-catalyst.
Another technical problem that the present invention solves there is provided a kind of simple to operate, be easy to control and support type kaolin/Bi with low cost 2o 2cO 3-BiPO 4the preparation method of composite photo-catalyst.
The present invention adopts following technical scheme, a kind of support type kaolin/Bi for solving the problems of the technologies described above 2o 2cO 3-BiPO 4composite photo-catalyst, it is characterized in that by by Bi 2o 2cO 3-BiPO 4composite photocatalyst and carrier granular kaolin compound are formed, wherein carrier granular kaolin and Bi 2o 2cO 3-BiPO 4compound light urges the mass ratio of agent to be 1-3:1, Bi 2o 2cO 3-BiPO 4[PO in composite photocatalyst 4 3-] and [Bi 3+] mol ratio be 0.05:1.
Support type kaolin/Bi of the present invention 2o 2cO 3-BiPO 4the preparation method of composite photo-catalyst, it is characterized in that comprising the following steps: (1) by two hypophosphite monohydrate sodium dihydrogens, five water bismuth nitrates, urea, the ratio of 0.05:1:3 and deionization mix and obtain mixed solution in molar ratio under agitation, adding ammoniacal liquor after stirring and dissolving regulates the pH value of mixed solution to be 4, add kaolin again, then mixed system is continued stirring 2 hours under the condition of room temperature; (2) mixed system of step (1) gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180-200 DEG C of microwave reaction 10-30 minute, after cooling, filtration, washing, drying, obtain the support type kaolin/Bi with high catalytic activity 2o 2cO 3-BiPO 4composite photo-catalyst.
Further restriction, in the mixed solution described in step (1), the molar concentration of bismuth nitrate is 0.05-0.1mol/L.
Further restriction, adding kaolinic quality in step (1) is Bi 2o 2cO 3-BiPO 4the 1-3 of composite photocatalyst quality doubly.
The present invention compared with prior art has following beneficial effect: using natural minerals kaolin as Bi 2o 2cO 3-BiPO 4the carrier of composite photocatalyst, can make Bi 2o 2cO 3-BiPO 4composite photocatalyst is combined with mineral securely, and then makes photocatalysis performance more lastingly stable; In addition, in waste water treatment applications, can also utilize kaolinic ion-exchange and absorption property that the organic matter in waste water is adsorbed onto Bi effectively 2o 2cO 3-BiPO 4the surface of composite photocatalyst, increases the contact probability of catalyst and pollutant, reaches the object improving the disposal efficiency and degradation rate, greatly can also reduce the preparation cost of photochemical catalyst simultaneously.
Detailed description of the invention
Be described in further details foregoing of the present invention by the following examples, but this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on foregoing of the present invention all belong to scope of the present invention.
Embodiment 1
(1) under agitation, amount of substance is respectively 0.5 × 10 -3the two hypophosphite monohydrate sodium dihydrogens of mol, 0.01mol, 0.03mol, five water bismuth nitrates, urea deionized water are made into mixed solution, the molar concentration of bismuth nitrate is made to be 0.05mol/L, adding ammoniacal liquor after stirring and dissolving regulates the pH value of mixed solution to be 4, add 7.722g kaolin again, then mixed system is continued stirring 2 hours under the condition of room temperature;
(2) mixed system of step (1) gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180 DEG C of microwave reactions 30 minutes, through cooling, filter, washing, obtain the support type kaolin/Bi with high catalytic activity after drying 2o 2cO 3-BiPO 4composite photo-catalyst.
Embodiment 2
(1) under agitation, amount of substance is respectively 0.5 × 10 -3the two hypophosphite monohydrate sodium dihydrogens of mol, 0.01mol, 0.03mol, five water bismuth nitrates, urea deionized water are made into mixed solution, the molar concentration of bismuth nitrate is made to be 0.08mol/L, adding ammoniacal liquor after stirring and dissolving regulates the pH value of mixed solution to be 4, add 5.148g kaolin again, then mixed system is continued stirring 2 hours under the condition of room temperature;
(2) mixed system of step (1) gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180 DEG C of microwave reactions 20 minutes, through cooling, filter, washing, obtain the support type kaolin/Bi with high catalytic activity after drying 2o 2cO 3-BiPO 4composite photo-catalyst.
Embodiment 3
(1) under agitation, amount of substance is respectively 0.5 × 10 -3the two hypophosphite monohydrate sodium dihydrogens of mol, 0.01mol, 0.03mol, five water bismuth nitrates, urea deionized water are made into mixed solution, the molar concentration of bismuth nitrate is made to be 0.1mol/L, adding ammoniacal liquor after stirring and dissolving regulates the pH value of mixed solution to be 4, add 2.574g kaolin again, then mixed system is continued stirring 2 hours under the condition of room temperature;
(2) mixed system of step (1) gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 200 DEG C of microwave reactions 10 minutes, through cooling, filter, washing, obtain the support type kaolin/Bi with high catalytic activity after drying 2o 2cO 3-BiPO 4composite photo-catalyst.
Embodiment above describes general principle of the present invention, principal character and advantage; the technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; under the scope not departing from the principle of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of the invention.

Claims (4)

1. support type kaolin/Bi 2o 2cO 3-BiPO 4composite photo-catalyst, it is characterized in that by by Bi 2o 2cO 3-BiPO 4composite photocatalyst and carrier granular kaolin compound are formed, wherein carrier granular kaolin and Bi 2o 2cO 3-BiPO 4compound light urges the mass ratio of agent to be 1-3:1, Bi 2o 2cO 3-BiPO 4[PO in composite photocatalyst 4 3-] and [Bi 3+] mol ratio be 0.05:1.
2. support type kaolin/Bi according to claim 1 2o 2cO 3-BiPO 4the preparation method of composite photo-catalyst, it is characterized in that comprising the following steps: (1) by two hypophosphite monohydrate sodium dihydrogens, five water bismuth nitrates, urea, the ratio of 0.05:1:3 and deionization mix and obtain mixed solution in molar ratio under agitation, adding ammoniacal liquor after stirring and dissolving regulates the pH value of mixed solution to be 4, add kaolin again, then mixed system is continued stirring 2 hours under the condition of room temperature; (2) mixed system of step (1) gained is transferred in hydrothermal reaction kettle, then hydrothermal reaction kettle is put into microwave dissolver in 180-200 DEG C of microwave reaction 10-30 minute, after cooling, filtration, washing, drying, obtain the support type kaolin/Bi with high catalytic activity 2o 2cO 3-BiPO 4composite photo-catalyst.
3. support type kaolin/Bi according to claim 2 2o 2cO 3-BiPO 4the preparation method of composite photo-catalyst, is characterized in that: in the mixed solution described in step (1), the molar concentration of bismuth nitrate is 0.05-0.1mol/L.
4. support type kaolin/Bi according to claim 2 2o 2cO 3-BiPO 4the preparation method of composite photo-catalyst, is characterized in that: adding kaolinic quality in step (1) is Bi 2o 2cO 3-BiPO 4the 1-3 of composite photocatalyst quality doubly.
CN201510296197.2A 2015-06-03 2015-06-03 Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor Pending CN104971754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510296197.2A CN104971754A (en) 2015-06-03 2015-06-03 Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510296197.2A CN104971754A (en) 2015-06-03 2015-06-03 Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor

Publications (1)

Publication Number Publication Date
CN104971754A true CN104971754A (en) 2015-10-14

Family

ID=54269044

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510296197.2A Pending CN104971754A (en) 2015-06-03 2015-06-03 Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor

Country Status (1)

Country Link
CN (1) CN104971754A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105772046A (en) * 2016-04-18 2016-07-20 河南师范大学 BiPO4-BiFeO3 compound photocatalyst and preparing method thereof
CN110075893A (en) * 2019-04-24 2019-08-02 莆田学院 A kind of photochemical catalyst and its preparation method and application
CN110745880A (en) * 2018-07-23 2020-02-04 荆门市格林美新材料有限公司 Cu2+Preparation method of basic nickel carbonate doped microspheres

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914392A (en) * 1972-05-23 1974-02-07
CN102275987A (en) * 2011-05-25 2011-12-14 中国地质大学（武汉） Nano/micro-scale sheet bismuthyl carbonate material and preparation method thereof
CN103101977A (en) * 2011-11-09 2013-05-15 上海纳米技术及应用国家工程研究中心有限公司 Bismuth tungstate nanocrystal and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914392A (en) * 1972-05-23 1974-02-07
CN102275987A (en) * 2011-05-25 2011-12-14 中国地质大学（武汉） Nano/micro-scale sheet bismuthyl carbonate material and preparation method thereof
CN103101977A (en) * 2011-11-09 2013-05-15 上海纳米技术及应用国家工程研究中心有限公司 Bismuth tungstate nanocrystal and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PUTTASWAMY MADHUSUDAN ET AL.,: "Novel urea assisted hydrothermal synthesis of hierarchical BiVO4/Bi2O2CO3 nanocomposites with enhanced visible-light photocatalytic activity", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105772046A (en) * 2016-04-18 2016-07-20 河南师范大学 BiPO4-BiFeO3 compound photocatalyst and preparing method thereof
CN110745880A (en) * 2018-07-23 2020-02-04 荆门市格林美新材料有限公司 Cu2+Preparation method of basic nickel carbonate doped microspheres
CN110075893A (en) * 2019-04-24 2019-08-02 莆田学院 A kind of photochemical catalyst and its preparation method and application
CN110075893B (en) * 2019-04-24 2022-02-11 莆田学院 Photocatalyst and preparation method and application thereof

Similar Documents

Publication Publication Date Title
Guo et al. Z-scheme heterojunction g-C3N4@ PDA/BiOBr with biomimetic polydopamine as electron transfer mediators for enhanced visible-light driven degradation of sulfamethoxazole
Wang et al. ZIF-8-modified MnFe2O4 with high crystallinity and superior photo-Fenton catalytic activity by Zn-O-Fe structure for TC degradation
Li et al. NiO/g-C3N4 2D/2D heterojunction catalyst as efficient peroxymonosulfate activators toward tetracycline degradation: characterization, performance and mechanism
Du et al. Construction and application of BiOCl/Cu-doped Bi2S3 composites for highly efficient photocatalytic degradation of ciprofloxacin
Zhong et al. Efficient degradation of organic pollutants by activated peroxymonosulfate over TiO2@ C decorated Mg–Fe layered double oxides: Degradation pathways and mechanism
Zhang et al. Facile construction of BiOBr ultra-thin nano-roundels for dramatically enhancing photocatalytic activity
CN103386306A (en) Cu/CuxO/TiO2 heterojunction visible light catalyst, as well as preparation method and application thereof
CN108686656B (en) alpha-Fe2O3Coal gangue composite photocatalyst and preparation method and application thereof
CN106552651B (en) Bi12O17Br2Synthesis and application method of photocatalyst
Tang et al. A novel S-scheme heterojunction in spent battery-derived ZnFe2O4/g-C3N4 photocatalyst for enhancing peroxymonosulfate activation and visible light degradation of organic pollutant
CN104607228A (en) Preparation method for alpha-Fe2O3 quantum dot/nitrogen-doped graphene composite material
CN104998671A (en) Supported Bi2O2CO3 photocatalyst and preparation method thereof
Huang et al. Bi 2 O 2 CO 3/Bi 2 O 3 Z-scheme photocatalyst with oxygen vacancies and Bi for enhanced visible-light photocatalytic degradation of tetracycline
CN104258885A (en) Preparation method of flaky hydroxyl copper phosphate nanometer material
CN109158124A (en) A kind of carbonitride and BiOX composite photocatalyst material and preparation method thereof
Yuan et al. Efficient degradation of tetracycline hydrochloride by direct Z-scheme HKUST-1@ m-BiVO4 catalysts with self-produced H2O2 under both dark and light
CN109985616A (en) Catalyst for photocatalytic degradation of organic wastewater and preparation method thereof
CN114247452A (en) Bismuth-bismuth sulfide-bismuth tungstate composite photocatalyst and preparation method and application thereof
CN104971754A (en) Loaded kaolin/Bi2O2CO3-BiPO4 composite photocatalyst and preparation method therefor
Zhu et al. Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation
CN113441142B (en) Preparation method and application of oxygen vacancy-rich graphene-loaded porous nano ferroelectric oxide catalyst
CN104971753A (en) Bi2O2CO3-BiPO4 composite photocatalyst and preparation method thereof
Wu et al. Synergetic effect of photocatalytic oxidation plus catalytic oxidation on the performance of coconut shell fiber biochar decorated α-MnO2 under visible light towards BPA degradation
Liu et al. Antibiotics photodegradation over recycling Z-scheme Bi2Ti2O7@ Bi2S3/PU with super-efficiency: DFT calculation, toxicity of oxytetracycline intermediates and photoactivation mechanism
Xu et al. Ti3+ self-doped TiO2 anchored with iron oxide quantum dots as an efficient persulfate catalyst for the enhanced removal of typical phenolic pollutants from water under visible light

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20151014